JPS6064513A - Voice monitor device - Google Patents

Abstract

PURPOSE:To obtain a sound loudspeaker having an optimum level by detecting a surrounding noise level at all times when no sound is outputted from a speaker and controlling the amplification factor depending on the level. CONSTITUTION:The speaker 1 is connected to a noise level/voltage converting circuit 3 by a switch 2 at all times so as to detect the surrounding noise level. The said noise level signal is fed to a control circuit 4, which receives the signal and controls on/off of transistors 8-11. Thus, the sound signal output from a voice synthesis board 13 is fed to an amplifier 14 without being attenuated as the surrounding noise level is higher. Then the sound output irradiated from the speaker 1 at the sound loudspeaker mode where the changeover switch 2 is selected to the position B is transmitted to a destination while not being defeated by the surrounding noise.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a voice monitoring device in which a speaker can be switched between an original output function and a microphone-like input function. , Normally, the speaker performs a microphone-like input function to detect surrounding noise, but when an abnormal condition occurs in the work vehicle, the speaker automatically switches to its original output state and detects the surrounding noise level. The present invention relates to a voice monitoring device that notifies an operator of an abnormal condition, an abnormal location, etc. using an appropriate amount of language voice according to the user's needs.

Recently, with the development of technology in the field of information processing, a means has been devised to notify an operator of an abnormal condition of a work vehicle by transmitting information by verbal voice instead of a panel display means. However, the volume of conventional audio warning devices is always constant regardless of the surroundings, so during work such as agricultural and construction machinery, the noise emitted from the engine and other operating devices is extremely loud, When a conventional alarm system with a constant volume was applied to a quiet work vehicle without any noise, the sound could not be heard due to the noise during work, and conversely, when the vehicle was not working, the sound was too loud and could interfere with the surroundings. There is a risk that disadvantages such as deterioration of the working environment may arise.

On the other hand, in order to notify the operator of the occurrence of trouble, a method has been developed that generates a sound proportional to the driving sound of the Sakin car to notify the operator, but in this case,
Since the microphone and speaker had to be installed separately, the device inevitably became complicated and complicated.

Therefore, the present invention provides a speaker with both an original output function and a microphone-like input function, and normally uses the microphone-like input device a to detect noise, and digitizes the noise signal to level the noise level. This method overcomes the drawbacks of the conventional method by determining the volume corresponding to the surrounding noise level, switching the speaker to its original output function when sound generation is necessary, and generating verbal sound from the speaker at a volume corresponding to the surrounding noise level. Operator power that can always generate a volume that matches the surrounding environment! The object of the present invention is to provide a voice monitoring device capable of supplying easy-to-listen voices with a simple configuration.

Embodiments of the present invention will be described below with reference to the drawings.As shown in FIG. The trap is designed to detect surrounding noise. The A side of the changeover switch 2 is connected to the analog input AINI side of the control circuit 4 via the noise level/voltage conversion circuit 3.

Noise level/Noise level at point C on the input side of voltage conversion circuit 3/
The relationship between '(dB) and the potential at the output point is proportional as shown in Figure 3. That is, the noise signal detected by the speaker 1 is converted by the noise level/voltage conversion circuit 3 into a voltage equal to the magnitude thereof, and is input to the analog input AINI side of the control circuit 4.

4-piece control circuit, first stores the analog/digital converted noise level data in memory, compares the analog/digital converted noise level data with the set value stored in memory to calculate the noise level, corresponds to the noise level. This function determines the on/off state of the gain adjustment transistor and sends the output corresponding to the sound manipulation level to the attenuator, and also switches the output 0UT2 side to the HI or LO state in response to the signal on the digital input INI side. have 1 As shown in Fig. 4, the noise level data S corresponding to the voltage at point D is compared with the set value HsIHa *H8 in the control circuit 4 to determine an appropriate noise level. The on/off state of the gain adjustment transistor 8°9.10 is determined based on the noise level, and the voltages A, A, T, and Ekae corresponding to the noise level are output to point E of the attenuator 5 as shown in Figure 5. be done.

On the other hand, the voice request selection switch or sensor 6゜6'...
. . . One end of D is connected to the digital input INI side of the control circuit 4 via the OR circuit 7, and further connected to the relay coil 12 via the output terminal 0UT2 and the transistor 11.

There is still no voice request selection switch or sensor 6゜6'...
...The other end of C is connected to the voice synthesis board 13, and then connected to B of the changeover switch 2 via an attenuator 5 and an amplifier 14.
connected to the side.

Here, select the voice request selection switch or sensor 6゜6'・
When the switch is turned on, the OR circuit 7 becomes LO level and the output terminal 0UT2 in the control circuit 4 becomes HI level, so the transistor 11 becomes conductive, the relay coil 12 is energized, and the changeover switch 2 is turned on. Since the A side is switched to the B@ side, the speaker 1, which had previously performed a microphone-like input function, now performs its original output function. That is, the voice request selection switch or sensor 6, 6/, . . . f
The signal is input to the voice synthesis board 13 and synthesized into the desired voice, and the voice signal is controlled in the attenuator 5 to a volume proportional to the voltage corresponding to the noise level, and amplified by the amplifier 14. and is output from the speaker 1 as speech in the language.

Next, the circuit diagram of the voice monitor device as shown in FIG. 1 will be converted into a block diagram as shown in FIG. 2 for explanation. The same reference numerals as in FIG. 1 will be used in FIG.

The speaker 1 is normally connected to the noise level/voltage conversion circuit 3 through a changeover switch 2 to detect surrounding noise signals. The noise signal is converted into a voltage by the conversion path 3, and further converted into a digital signal by the AD conversion means and stored in the memory means.

Here, select the voice request selection switch or sensor 6゜6'・
...61 is activated, the selector switch 2 is switched to the amplifier 14 side, so that the speaker l performs its original output function. Further, since the changeover/connection switch in the control circuit 4 connects the memory means to the comparison means, the noise level data S and the set value stored in the memory means are compared and judged by the comparison means, and the noise level is determined. Ru. Then, a volume corresponding to the noise level is determined and a command is sent to the attenuator 5.

On the other hand, voice request switch or sensor 6.6'...
The signal from the de is sent to the speech synthesis board 13 to synthesize linguistic speech, and the speech signal is sent to the control circuit 4 within the attenuator 5.
The sound is output at a volume corresponding to the noise level determined in step 1, is amplified by the amplifier 14, and is output by the speaker 1 as a speech sound at a volume commensurate with the surrounding noise.

Although a changeover/connection switch is provided between the A/D conversion means and the comparison means in the control circuit 4, it is not necessary to provide this changeover/connection switch. are connected in series and the noise level is determined by always comparing the noise level data with the set value stored in the memory means using the comparison means even if the voice request selection switch or sensor is not activated. Of course it's a good thing.

The voice synthesis board also has a voice request selection switch.

The specific language corresponding to the channel or sensor may be retrieved from a pre-stored computer or may be transmitted to a speaker by playing an audio tape. Of course, other means may also be used.

Next, the operation of the control circuit of this embodiment will be schematically explained using this chart as shown in FIG.

First, voice request selection switch or sensor 6゜6'...
...In normal times when neither f is on, arrow X
The selector switch 2 is connected to the A side, and the speaker 1 exhibits a microphone-like input function.

That is, the ambient noise input from the speaker 1 is converted into a voltage signal by the noise level/voltage conversion circuit 3, digitized as noise level data i by the A-D conversion means, and stored in the memory means. be done.

Next, the voice request selection switch or sensor 6゜6'...
. . . When any one of C is turned on, the speaker moves along the path in the direction of arrow Y, the changeover switch 2 is switched to the υB side by the operation of the relay coil 12, and the speaker 1 performs its original output function. Then, the audio signal from the audio synthesis board 13 passes through the attenuator 5 and the amplifier 14, and is output from the speaker 1 at a volume corresponding to the noise level determined by the control circuit 4.

Further, the operation of the control circuit of this embodiment will be explained in more detail using a flowchart as shown in FIG.

When the digital input INI side of the control circuit 4 is in the HI state, the output 0UT2 side is in the LO state, and the transistor 1
1 is not conductive, so the changeover switch 2 is connected to the A side. At this time, the speaker 1 detects surrounding noise in order to exhibit a microphone-like input function. This noise signal is converted into a voltage by the noise level/voltage conversion circuit 3. Further, the noise level data S converted into a digital signal by the human head conversion means is stored in a memory means within the control circuit 4.

On the other hand, when the digital input INI side is in the LO state, that is, when either the audio request selection switch or the sensor 6, 6', etc. is in the ON state, the output 0UTZ side is in the HI state, so the transistor 11 becomes conductive. Then, the relay coil 12 is activated and the changeover switch 2 is switched to the B side. Therefore, since the changeover/connection switch in the control circuit 4 connects the memory means and the comparison means, the noise level data S is compared with the set values H, , H, , H, in the memory means. In Figure 8g4, when Hs<S, that is, when the noise level data S is the maximum setting value H, and when it is much larger, it is 0.
UTII.

0UTI 2.0UTI 317) Since both are in the LO state, the gain adjustment transistors 8, 9, and 10 are not conductive, and the voltage at point E of the attenuator 5 corresponds to state A shown in Figure 5, and the voltage value is Vαcx. ＞≦R. At this time, the voice synthesized by the voice synthesis board 13 is output from the speaker 1 at the maximum volume.

Next, when H,<S<H, that is, in FIG. 4, the noise level data S is between the intermediate setting value H1 and the maximum setting value H8.
, only the output 0UTII becomes HI, so only the transistor i becomes conductive, and the
The point voltage is as shown in Fig. 5. When H<S<H, that is, in Fig. 4, the noise level data S is between the minimum setting value H and the intermediate setting value H. When the output is 0UTII.

Since 0UT12 is in the HI state, transistor 9 is also conductive following transistor 8, and at the end of attenuator 5, S<
When it is HI, that is, when the noise level data S is smaller than the minimum setting value H1 in Fig. 4, the output is 0UTI.
1.0UTI 2.0UT13 are all in the HI state, so all transistors 8,9,10 are also conductive, and the sound synthesized by the E point voltage synthesis board 13 of the attenuator 5 has the minimum volume and is output from the speaker 1. is output from.

In this embodiment, a resistance value R11# is provided in the attenuator 5.
Although RI* and R1 are used to switch the volume in four stages, the present invention is not limited to this, and the number of resistors can be increased or decreased with a similar structure, so the number of volume switching stages is greater than in this embodiment. Of course, it is possible to design as much as possible.

Next, the operation when the preparation and synthesis board software of this embodiment is applied to, for example, a combine harvester will be explained using a flowchart as shown in FIG.

The voice request selection switch or sensor 6 is designed to sense, for example, the filling of waste straw, 6' to sense that the paddy bag is full, and DA to sense that the paddy tank is full.

When the voice request selection switch or the light sensor 6 is turned on, the voice synthesis board 13 sends a voice signal saying "I don't want to waste straw" to the attenuator 5, and the noise set by the control circuit 4 is reduced. This is output to notify the operator that the waste straw is clogged. The operator senses the voice and
'Remove the clogged waste straw or turn the switch or sensor 6 to O.
By setting it to FF, the voice saying "It's waste straw filling" disappears.

Similarly, when the switch or sensor 6' is turned ON, the voice synthesis board 13 sends the voice signal "The paddy bag is full" to the attenuator 5, and the noise level is set by the control circuit 4. A sound is output from the speaker 1 at a corresponding volume to notify the operator that "the paddy bag is full". When the operator senses the voice and empties the paddy bag or turns off the switch or sensor 6', the voice "The paddy bag is full" disappears.

It operates in the same way when the switch or sensor tab is turned on, allowing the operator to prevent operational troubles from occurring.

As explained above, according to the present invention, the speaker can be switched to have a microphone-like input function in addition to its original output function, which reduces the overall structure compared to installing the microphone and speaker separately. Not only is this simple, but the control circuit also outputs verbal audio at a volume that corresponds to the surrounding noise level. It is possible to eliminate problems such as being very loud and noisy and deteriorating the surrounding working environment, and it is possible to always provide the operator with a suitable opening and clear and appropriate sound.

In addition, when the speaker does not generate sound, it constantly detects the surrounding noise level, so it can be used as a noise level sensor for other automation, for example, if the rumbling sound level of threshing gets louder, it can be determined that there is an abnormality. This noise level data can also be used, so it has great practical value.

[Brief explanation of the drawing]

Figure 1 is a circuit diagram of a voice monitor device that implements the present invention, Figure 2 is a professional line diagram that has been converted from the circuit diagram in Figure 1, and Figure 3 is the noise level at the 0 point in Figure 1. Figure 4 is a diagram showing the relationship between the voltage at point D and the noise level data S in the control circuit in Figure 1. Figure 5 is a diagram showing the voltage at point E in Figure 1 and the speaker volume. 6 is a schematic flowchart of the operation of the control circuit of this embodiment,
FIG. 7 is a detailed flowchart of the operation of the control circuit of this embodiment, and FIG. 8 is a flowchart of the operation when the voice synthesis board software of this embodiment is applied to a combine harvester. 1...Speaker, 2...Selector switch, 3.
...Noise level A/voltage conversion circuit, 4...Control circuit, 5...Attenuator, 6t6'l...C
...Voice request selection switch or sensor, 8.9.
10...Gain adjustment transistor, 12...Relay coil, 13...Speech synthesis board, 14...
・Amplifier Fig. 2 1st Fig. 4 E direct, 0 voltage Fig. 8

Claims (1)

[Claims] (1) A voice monitoring device in which a speaker can be switched between its original output function and a microphone-like input function, and the device normally performs the microphone-like input function to detect noise and generate a noise signal. A speaker, means for converting the noise signal into a digital signal, means for determining a noise level, means for determining a volume corresponding to the noise level, and means for switching the speaker to its original output function when sound generation is necessary. A voice monitoring device which has a voice synthesis board and generates a voice from a speaker at a volume corresponding to the noise level when voice generation is required.